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Friday, 23 January 2015

Hemoglobin

Hemoglobin

Hemoglobin is a protein found in red blood cells and responsible for the red color. It exists in several forms, including hemoglobin A1 representing 98% of the hemoglobin of a normal individual.

In the fetus, there are hemoglobin F hemoglobins and some, such as S responsible for sickle cell anemia, are associated with diseases called hemoglobinopathies. Hemoglobin main function is to transport oxygen molecules to organs and tissues through the bloodstream.

After the breakdown of red blood cells, a portion of the hemoglobin will be transformed by several reactions bilirubin compound that gives the yellow color of urine and stercobilin giving its brown color to the stool. The normal amount of hemoglobin is between 13 and 18 grams per liter of blood in humans.